Dumb Math question?

Question

I feel really dumb asking this, but I completely forgot how to solve these!
(5x-3)^2

Answer 1

It means (5x-3)(5x-3) . Multiply each term in the first binomial by each term in the second then combine like terms:

25x^2 - 15x - 15x + 9 = 25x^2 - 30x + 9

Answer 2

yeah very dumb.....lol

(5x-3)^2
that is square of a binomial..use the shortcut rule for square of a binomial......
The square of any binomial produces the following three terms:

1. The square of the first term of the binomial: a²

2. Twice the product of the two terms: 2ab

3. The square of the second term: b²


square of the first term is
25x^2
then multiply the 2 terms times 2
-30x
square of the last term
9
=25x^2-30x+9

Answer 3

When something is squared make sure you DO NOT just do this...because this is wrong: 5x^2-3^2 if you end up with 25x^2-6 you're wrong.

You have to do (5x-3)(5x-3) then FOIL (first outer inner last)
You get (5x)(5x) for first
(5x)(-3) for outer
(-3)(5x) for inner
(-3)(-3) for last

so you should end up with 25x^2-15x-15x+9
then put like terms together and you should have 25x^2-30x+9

Answer 4

(5x-2)^2 = (5x-2)(5x-2) Multiply the first terms together, then the outer numbers, then the inner, then tl last numbers inside the ().

(5x)(5x)-(5x)(2)-(5x)(2)+(2)(2)

Answer 5

Only equations can be solved. Probably you are missing right part of equation.